Changes in current travel patterns are important in order to move towards a more sustainable future of tourism. This paper reports findings from a study (N = 762) investigating the relative importance of social and personal norms in explaining intentions to choose eco-friendly travel options. Personal norms showed the strongest association with behavioural intentions and further mediated the link between injunctive social norms and behavioural intentions. Overall findings indicate that social and personal norms seem both related to travel choices but that a particular emphasis should be given to the role of personal norms. Further implications of these findings are discussed.

This study investigated relations between consumers' sustainable development self-efficacy, attitudes, norms and intentions to purchase sustainable groceries such as ecological and fair trade foods. Demographic variables were also investigated. Attitudes and norms were positively associated with intentions to purchase sustainable products. The importance of different types of attitudes and norms for explaining sustainable consumption depended on the facet of purchasing intentions that was investigated. Self-efficacy explained variance in purchasing intentions over and above attitudes, norms and demographic characteristics. Of the self-efficacy components, people's perceptions of their indirect impact gained by encouraging others to contribute to sustainable development showed the strongest association with purchasing intentions. This could mean that believing that one can have an impact on other consumers is a strong motivator for buying sustainable products. Implications of these findings for practitioners and environmental policy are discussed.

Climate change threatens mental health via increasing exposure to the social and economic disruptions created by extreme weather and large-scale climatic events, as well as through the anxiety associated with recognising the existential threat posed by the climate crisis. Considering the growing levels of climate change awareness across the world, negative emotions like anxiety and worry about climate-related risks are a potentially pervasive conduit for the adverse impacts of climate change on mental health. In this study, we examined how negative climate-related emotions relate to sleep and mental health among a diverse non-representative sample of individuals recruited from 25 countries, as well as a Norwegian nationally-representative sample. Overall, we found that negative climate-related emotions are positively associated with insomnia symptoms and negatively related to self-rated mental health in most countries. Our findings suggest that climate-related psychological stressors are significantly linked with mental health in many countries and draw attention to the need for cross-disciplinary research aimed at achieving rigorous empirical assessments of the unique challenge posed to mental health by negative emotional responses to climate change.

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Environmental sustainability may be seen as a collective challenge that can only be met if a sufficient number of individuals cooperate. Whether or not individual tourists are willing to contribute their share may thus depend not only on the degree to which they think that environmental sustainability is important (attitudes), but also on the degree to which they think that other tourists hold similar attitudes (social comparison). Other possible influences are beliefs that one's own behaviour can make a difference (self-efficacy beliefs) and that tourists as a group together can make a difference (collective efficacy beliefs). This paper reports on findings from a study (N ¼ 358) that investigated the role of these factors in explaining people's willingness to pay for environmental protection when travelling. Attitudes, self-efficacy and collective efficacy accounted for 30% of the variance in willingness to pay for environmental protection; social comparison did not explain additional variance. Theoretical and practical implications are discussed.